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Winix air purifier

Winix NK100 replacement filter

Winix NK100 uses Filter N (part 112180) as its primary replacement filter set.

Official Winix fit · checked

Same filter, other models

Other Winix purifiers that use Filter N 112180

Own more than one purifier? These models share the same official part number.

All compatible Winix NK100 filters

Every part number below is a primary replacement filter for this model.

Filter Part number Type Price
Filter N 112180 Primary replacement filter set Check price

Price links open sponsored eBay searches for the exact part number.

Before you order

How to buy the right Winix NK100 filter

  • Confirm the label on your purifier reads NK100.
  • Make sure the listing names part 112180, not just a similar-looking filter.
  • Check the pack size and pieces included. Genuine and third-party filters can differ.
  • Compare the total price with shipping, plus the seller's feedback and delivery estimate.

Care guidance

Replacement schedule

  • Filter N 112180: Winix sells this as a one-year replacement filter set and recommends changing it once every 12 months.

Usage and air quality can affect service life. Follow the cited manufacturer guidance for each part.

Frequently asked questions

What filter does the Winix NK100 use?

The Winix NK100 uses Filter N (112180). Each part number on this page is backed by an official Winix source.

How often should I replace the Winix NK100 filter?

Winix sells this as a one-year replacement filter set and recommends changing it once every 12 months.

Where can I check replacement filters for the Winix NK100?

This page links directly to the cited official Winix product page and shows sponsored individual eBay listings when a fresh exact-part snapshot is available, with an exact-part eBay search fallback. This site does not sell filters; match the part number and review the current source or seller listing before buying.

Official compatibility record

Manufacturer evidence

Each compatibility and care statement below is reproduced from the cited official manufacturer record. Check the source again before ordering.

Filter N 112180

Official Winix America product page identifies Filter N, SKU 112180, as compatible with models NK100 and NK105.

Source checked
Replacement guidance
Winix sells this as a one-year replacement filter set and recommends changing it once every 12 months.
Guidance checked

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